What accessories are required to be purchased for a new installation to be complete?
Do I need a water line kit or power cord, etc...?
You will need a 1/4" water line kit. They recommend using a copper or stainless steel water line. And you will need the nut with a compression ring, as these are not included.
Though it is not required, I would also recommend purchasing the optional freezer mounted ice maker, as the ice maker included with the refrigerator does not hold a lot of ice and takes a long time to make ice.